Only copy a file if it's not in the Drupal web root.

src/Commands/MediaAttributionCommands.php

@@ -37,7 +37,10 @@ class MediaAttributionCommands extends DrushCommands {
     $license_data = Yaml::decode($file_contents);
 
     foreach ($license_data as $license_item) {
-      $icon_file_path = isset($license_item['icon_file']) ? $cwd . '/' . $license_item['icon_file'] : '';
+      $icon_file_path = '';
+      if (!empty($license_item['icon_file'])) {
+        $icon_file_path = substr($license_item['icon_file'], 0, 1) == '/' ? $license_item['icon_file'] : $cwd . '/' . $license_item['icon_file'];
+      }
       LicenseLoader::createOrUpdateLicenseTerm($license_item['title'],$license_item['short_label'], $icon_file_path, $license_item['url']);
     }
 

src/LicenseLoader.php

@@ -7,8 +7,7 @@ use Drupal\taxonomy\Entity\Term;
 use Drupal\file\Entity\File;
 use phpDocumentor\Reflection\Types\Integer;
 
-class LicenseLoader
-{
+class LicenseLoader {
 
   /**
    * Create a new license term with the given values.
@@ -27,12 +26,11 @@ class LicenseLoader
    * @throws \Drupal\Component\Plugin\Exception\PluginNotFoundException
    * @throws \Drupal\Core\Entity\EntityStorageException
    */
-  public static function createOrUpdateLicenseTerm($term_title, $term_short_label, $icon_file_path, $license_url)
-  {
+  public static function createOrUpdateLicenseTerm($term_title, $term_short_label, $icon_file_path, $license_url) {
     $tids = array_values(\Drupal::entityQuery('taxonomy_term')
       ->condition('name', $term_title)
       ->execute());
-    print_r($tids);
+
     if ($tids) {
       self::updateLicenseTerm($tids[0], $term_title, $term_short_label, $icon_file_path, $license_url);
       return $tids[0];
@@ -125,9 +123,16 @@ class LicenseLoader
     // if not create a file
 
     if (!$icon_file) {
+      if (substr($icon_file_path, 0, strlen(DRUPAL_ROOT)) == DRUPAL_ROOT) {
+        $icon_uri = substr($icon_file_path, strlen(DRUPAL_ROOT), strlen($icon_file_path));
+      }
+      elseif (substr($icon_file_path, 0, 1) != '/') {
+        $icon_uri = $icon_file_path;
+      }
+      else {
         $fs = \Drupal::service('file_system');
         $icon_uri = $fs->copy($icon_file_path, 'public://');
-
+      }
       $icon_file = File::create([
         'uri' => $icon_uri,
       ]);